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From: atarasco at gmail.com (Andres Tarasco)
Subject: smtpsvc and undocumented registry values
Try Microsoft IIS Metabase Editor to change that data.
btw, there is a nice pdf about hardening Windows 2003 from
safehack.com people that explains how to change it
regards,
Andres Tarasco
On Wed, 23 Feb 2005 18:26:40 +0100, Thierry Haven
<thierry.haven@...opartners.com> wrote:
> Hi,
> I've been hacking around smtpsvc.dll (Windows Server 2003) in order to hide the Server version when a mail is relayed:
>
> Original header:
> "from [192.168.X.X] ([192.168.X.X]) by winserv2003 with Microsoft SMTPSVC(6.0.3790.0); Wed, 23 Feb 2005 15:47:51 +0100"
>
> I found that it is possible to remove this information by patching the code directly in the DLL:
>
> Modified header:
> "from [192.168.X.X] ([192.168.X.X]) by winserv2003 with some server; Wed, 23 Feb 2005 15:49:51 +0100"
>
> ... Assuming that smtpsvc.dll checks its own version at runtime by retrieving information in the .rsrc section of the PE thanks to version.dll calls. However I'd like to know if there is a better way to disable this "feature" (maybe a key in the registry ?).
>
> Next I'd like to ask about such undocumented registry values. Where to find information about them ?
>
> Best Regards,
>
> _______________________________________
> Thierry Haven - Xmco Partners
> Security Consulting / Pentest
> web : http://www.xmcopartners.com
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>
--
Loco de aTar
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